In honor of Earth Day, National Geographic is inspiring and empowering people around the world to make changes in their daily lives in support of a more sustainable planet. On television, Nat Geo WILD is dedicating its primetime slate on April 22 to shining a light on wildlife advocates, with new specials and some of the best documentaries from the channel's archive. Online, in addition to features and photo galleries on NationalGeographic.com, the company's Instagram brands will join forces for the first time ever to feature followers' nature photos through the #NatGeoEarthDay campaign.